Women's Aid, yes, and NCDV, as well as your local authority DV department. You'll get loads of support from them: help with benefits (if appl), even Legal Aid if you've laid enough paper trail (and your finances) prove you need it.
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Look on the Women's Aid website for up to date indictators of domestic coercion and control and bring that laundry list into your GP (and talk to the police if you feel it's bad enough). Don't delay, don't minimise, don't stiff-upper-lip it. Even if you don't think you'll need it this very second, get a referral for some counselling, because you really need to look after yourself first and foremost.
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Talk to your children's schools - they'll need to know, to help your DC, and they might even be able to signpost you to resources.
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I'm concerned because, even though he's moved out, he might decide to come and go as he pleases, messing with your heads further, so you would do well to consider residency and non-mol orders to keep you safe and sane.
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Best of luck